Hi mfgengear, thank you for the help!
I agree on the timing - whole reason I went with them and why I switched to 8620 was they had bars in that size in hand. Oh well live and learn, the first gear was in roughly 9 weeks but untreated. The 23 weeks ones and being lost at heat treat is way...
Hi all,
Back in March I sent out for a few sets of prototype bevel gears to be made. For cost, capability (I've spent the last decade doing spurs and none of my local shops wanted anything to do with 2 sets of 88 deg bevels) and timing reasons, I went with a shop I had never worked with before...
Spigor,
Thanks for your reply. Did you do manual/hand calculations or did you use software? I do not tend to put trust in any numbers just presented without understanding where they came from (hence both my initial question, and trying to follow up with yours). I verified that geartrax gave...
Just to add - the calculated new/nominal center distance for the gears in question is 51.673mm according to Geartrax. Before profile modification the center distance is 50.625mm. That would be an increase of about 1.048mm (half the sum of modification would end up being (1.125mm+0)/2 =...
Thanks tbuelna and spigor, I'll check out each of your suggestions.
Spigor, I'm not quite certain how you got those numbers. Can you walk me through what you used/did to get there? I'll run through it again. Geartrax automatically updates the center distance when the profile modification is...
Hi All,
I've been looking everywhere I can for this subject without any luck (Dudley, Khiralla, and Buckingham's books and all over the web) without any success.
I'm designing a three gear system, and I'm attempting to make it with long addendums/ all (or at least close to it) recess action...
Hi all!
I've been doing some digging, and haven't been able to locate a resource to help with my question. I'm still new to epicyclic gear design, so thank you for your patience!
My company is working on a three-stage epicyclic gearbox with all three stages sharing the same ring gear. We are...
Thanks all for the help! This link is also very helpful for this type of device if ever you find yourself in a similar situation. It appears this is technically called a "Power Split Device". Very interesting read!
http://prius.ecrostech.com/original/Understanding/PowerSplitDevice.htm
Thank you, Mike! That sea to jive with what I've been finding. Do you know how to determine analytically or how to design it to be a particular split? That's where I was thinking conservation of power but I'm just not certain how to go about designing or calculating what percentage goes in...
Hello All,
I've been tasked to develop a generalized model for calculating speeds/torques etc. of a new series of epicyclic gear trains we are developing. This is new territory for the company I am with so there is not any tribal knowledge for me to go on here.
I have a pretty good grasp in...
Ah so I did, pre coffee brain for the win. I was referring to licensure (as I stated throughout the question itself. I am genuinely interested/curious what could have been taken by certification. Is there some type of engineering certification that would enable/ prohibit freelancing?
As an...
Thank you for your comment, Ron. Can you please elaborate on what you mean? (I did a quick scan of the thread and didn't see anything mentioning certification buy licensing).
Thank you jpankask! That was a great response and thoroughly answered my questions! I was pretty worried about the PE recomendations but that seems less of a hurdle now that you explained it. Now to just pass the exam...
Hi all,
I'm a mechanical engineer about 4 years out of school. I had no problem with the FE and am looking into taking the PE. I've had a couple jobs so far and have learned a good ammount but have decided that working for myself is my preffered career trajectory in the long term.
My...
